package com.example.demo.customer;
import com.example.demo.exception.NotFoundException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;


@Service
public class CustomerService {

    private final static Logger LOGGER = LoggerFactory.getLogger(CustomerService.class);

     private final CustomerRepository customerRepository;

     @Autowired
     public CustomerService( CustomerRepository customerRepository){
      this.customerRepository = customerRepository;
     }

     List<Customer> getCustomers(){
         LOGGER.info("getCustomers called");
         return customerRepository.findAll();
     }

     Customer getCustomer(Long id){
       return customerRepository
               .findById(id)
               .orElseThrow(() -> {
                    NotFoundException notFoundException = new NotFoundException("customer" + id + "无法找到");
                    LOGGER.error("error:getCustomer {}" + id,notFoundException);
                    return notFoundException;
               });
     }
 }
